METHOD FOR DECIDING COMMUNICATION PROTOCOL BETWEEN WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER

• US 20130288595A1
• Filed: 10/11/2012
• Published: 10/31/2013
• Est. Priority Date: 04/25/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Hyunbeom, Lee, Jaesung, Park, Yong-Cheol, Seo, Jeongkyo
• Granted Patent: US 9,887,037 B2
• Time in Patent Office: Days
• US Class Current: 455/39
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

This specification provides a method for deciding a communication protocol between a wireless power transmitter and a wireless power receiver. To this end, a method for deciding a communication protocol by the wireless power receiver for data transmission or reception with the wireless power transmitter includes transmitting first communication protocol information indicating communication protocols supportable by the wireless power receiver itself to the wireless power transmitter, and deciding a communication protocol for the data transmission or data reception based on second communication protocol information, which indicates communication protocols selected based on the first communication protocol information, when the second communication protocol information is received from the wireless power transmitter.

Claims

1. A method for deciding a communication protocol using a wireless power receiver for data transmission or data reception with a wireless power transmitter, the method comprising:

transmitting first communication protocol information to the wireless power transmitter, the first communication protocol information indicating at least one communication protocols supportable by the wireless power receiver; and

deciding, by the wireless power receiver, a communication protocol for the data transmission or data reception based on second communication protocol information when the second communication protocol information is received from the wireless power transmitter, the second communication protocol information indicating at least one communication protocol selected by the wireless power transmitter based on the first communication protocol information.

2. The method of claim 1, wherein the first communication protocol information includes a communication protocol list in which communication protocols supportable by the wireless power receiver are listed.

3. The method of claim 1, wherein the at least one communication protocols supportable by the wireless power receiver is selected from predetermined communication protocols included in a communication protocol catalog.

4. The method of claim 1, wherein the second communication protocol information includes a communication protocol list in which the at least one communication protocol selected by the wireless power transmitter based on the first communication protocol information are listed.

5. The method of claim 4, wherein when the selected at least one communication protocol is in plurality, the decision of the communication protocol is executed based on positions of the selected communication protocols in the communication protocol list containing the selected communication protocols.

6. The method of claim 1, further comprising performing the data transmission or data reception with the wireless power transmitter based on the decided communication protocol.

7. The method of claim 1, wherein the transmitting of the first communication protocol information to the wireless power transmitter comprises:

generating a packet including the first communication protocol information; and

transmitting the generated packet to the wireless power transmitter.

8. The method of claim 7, wherein the packet is transmitted by modulating a wireless power signal generated by the wireless power transmitter to include the packet.

9. The method of claim 7, wherein the packet is transmitted by a communication module provided in the wireless power receiver.

10. The method of claim 9, wherein the communication module supports at least one of Zigbee, Bluetooth and Near Field Communication (NFC).

11. The method of claim 1, wherein the first communication protocol information or the second communication protocol information includes communication direction information and a communication protocol number indicating the type of communication protocol.

12. The method of claim 11, wherein the communication direction information includes information indicating at least one of a first direction that data is transmitted from the wireless power transmitter to the wireless power receiver, and a second direction that data is transmitted from the wireless power receiver to the wireless power transmitter.

13. The method of claim 12, wherein the selected at least one communication protocol includes a communication protocol corresponding to the first direction and a communication protocol corresponding to the second direction.

14. The method of claim 11, wherein the first communication protocol information or the second communication protocol information is 7-bit information, and

wherein the communication direction information is 1-bit information, and the communication protocol number is 6-bit information.

15. The method of claim 1, further comprising performing the data transmission or data reception with the wireless power transmitter based on a reference communication protocol upon a failure of the reception of the second communication protocol information from the wireless power transmitter.

16. The method of claim 15, wherein the reference communication protocol is a communication protocol for ensuring data transmission or data reception between the wireless power transmitter and the wireless power receiver.

17. A method for deciding a communication protocol using a wireless power transmitter for data transmission or data reception with a wireless power receiver, the method comprising:

deciding, by the wireless power transmitter, at least one communication protocol based on first communication protocol information upon reception of the first communication protocol information from the wireless power receiver, the first communication protocol indicating at least one communication protocols supportable by the wireless power receiver; and

transmitting second communication protocol information to the wireless power receiver, the second communication protocol information indicating the decided at least one communication protocol.

18. The method of claim 17, further comprising performing the data transmission or data reception based on the decided at least one communication protocol.

19. The method of claim 17, wherein the transmitting of the second communication protocol information to the wireless power receiver comprises:

generating a packet including the second communication protocol information; and

transmitting the generated packet to the wireless power receiver.

20. The method of claim 19, wherein the packet is transmitted by generating a wireless power signal which has been modulated to include the packet.

21. The method of claim 19, wherein the packet is transmitted by a communication module provided in the wireless power transmitter.

22. The method of claim 21, wherein the communication module supports at least one of Zigbee, Bluetooth and NFC.

23. The method of claim 17, wherein the first communication protocol information or the second communication protocol information includes communication direction information and a communication protocol number indicating a type of the communication protocol.

24. The method of claim 17, further comprising performing the data transmission or data reception with the wireless power receiver based on a reference communication protocol upon a failure of the reception of the first communication protocol information from the wireless power receiver.

25. The method of claim 24, wherein the reference communication protocol is a communication protocol for ensuring the data transmission or data reception between the wireless power transmitter and the wireless power receiver.

26. A wireless power receiver for wirelessly receiving power from a wireless power transmitter, the wireless power receiver comprising:

a power receiving unit configured to receive a wireless power signal from the wireless power transmitter; and

a power reception control unit configured to transmit first communication protocol information to the wireless power transmitter, the first communication protocol information indicating at least one communication protocols supportable by the wireless power receiver,

the power reception control unit further configured to decide at least one communication protocol for data transmission or data reception for receiving the wireless power signal based on second communication protocol information upon receiving the second communication protocol information from the wireless power transmitter, the second communication protocol information indicating at least one communication protocol selected by the wireless power transmitter based on the first communication protocol information.

27. The wireless power receiver of claim 26, wherein the power reception control unit generates a packet including the first communication protocol information, and

wherein the power receiving unit modulates the wireless power signal to include the packet.

28. The wireless power receiver of claim 26, further comprising a communication module configured to transmit the first communication protocol information to the wireless power transmitter and to receive the second communication protocol information from the wireless power transmitter.

29. A wireless power transmitter for wirelessly transferring power to a wireless power receiver, the wireless power transmitter comprising:

a power conversion unit configured to generate a wireless power signal and to transmit the wireless power signal to the wireless power receiver; and

a power transmission control unit configured to decide at least one communication protocol for data transmission or data reception for transmitting the wireless power signal based on first communication protocol information upon receiving the first communication protocol information from the wireless power receiver, the first communication protocol information indicating at least one communication protocols supportable by the wireless power receiver,

the power transmission control unit further configured to transmit second communication protocol information to the wireless power receiver, the second communication protocol information indicating the decided at least one communication protocol.